INSTRUCTIONS: PROVIDE EXPLANATION TO THE FOLLOWING QUESTIONS BELOW. REFER TO COMMENT SECTION FOR FURTHER DETAILS.

1. Many highways and buildings are constructed with reinforced concrete (concrete with embedded steel rods). The coefficient of expansion of the concrete is the same as that of steel. Why is it important that these two have the same coefficients of expansion? (120 WRDS)

2. The Mpemba effect tells that ice cubes to freeze faster when hot water os put on the ice tray for freezing. Explain this physically. (120 WRDS)